A colorless powder used in baking powders, as a plant food, as a plastic stabilizer, and in glass. Calcium phosphate is deliquescent, and will dissolve in the water it absorbs from the atmosphere if it is not kept in a closed container. Chemical formula:Ca(H2PO4)2.

A white crystalline powder used as an animal food, as a plastic stabilizer, and in glass and toothpaste. Chemical formula: CaHPO4.

A white powder that is used in ceramics, rubber, fertilizers, and for various purposes in the food industry. Chemical formula: Ca3(PO4)2.